CN105375093B - The adjustable microstrip power divider of working frequency - Google Patents
The adjustable microstrip power divider of working frequency Download PDFInfo
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- CN105375093B CN105375093B CN201510718123.3A CN201510718123A CN105375093B CN 105375093 B CN105375093 B CN 105375093B CN 201510718123 A CN201510718123 A CN 201510718123A CN 105375093 B CN105375093 B CN 105375093B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P5/00—Coupling devices of the waveguide type
- H01P5/12—Coupling devices having more than two ports
- H01P5/16—Conjugate devices, i.e. devices having at least one port decoupled from one other port
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Abstract
The present invention is the adjustable microstrip power divider of working frequency, solves existing power splitter working frequency and fixes, it is impossible to dynamic regulation, it is impossible to the problem of filtering.Substrate has the first plated-through hole (121), the second plated-through hole (131), third plated-through hole (141), the 4th plated-through hole (151) for running through substrate up and down, and substrate upper surface is welded with the first varactor (161), the second varactor (162), third varactor (163), the 4th varactor (164), the first biasing resistor (171), the second biasing resistor (172), third biasing resistor (173), the 4th biasing resistor (174), isolation resistance（21）, upper strata metal（1）There is incoming feeder（11）, the first tunable resonator（12）, the second tunable resonator（13）, third tunable resonator（14）, the 4th tunable resonator（15）, the first offset line（181）, the second offset line（182）, the first output feeder（19）, the second output feeder（20）, incoming feeder（11）It is vertically connected and formed with two sections of symmetrical U-shaped microstrip lines by 50 ohm of microstrip lines.
Description
Technical field：
The invention belongs in microwave and millimeter wave device arts more particularly to microwave and millimeter wave device can Power Regulation point
Device.
Background technology：
Now, demand of the people to wireless communication is increasing, and various communication systems are fast-developing.Wireless communication system leads to
Multiple frequency ranges of work are often needed, to adapt to the different demand of user.The global system for mobile communications of mobile communication（GSM）And width
Band CDMA（WCDMA）The frequency range of communication protocol standard work is 900MHz, 1800MHz and 1900MHz, and WLAN
Product is then operated in the ISM band of open 2.4GHz and 5GHz.The parallel logical of different frequency is operated in therefore, it is necessary to multiple
Road, to meet the requirement of different communication protocol.But can increase system complexity in this way, size and power consumption are inevitable
It can increase.Therefore, the miniaturization of equipment is kept, multiband work increases bandwidth of operation, and it is wirelessly to set at present to improve transmission rate
The significant challenge that standby manufacturer faces.
Power splitter is the microwave passive component for input signal being divided into two-way or multiple signals, is widely used in antenna array
It arranges, balanced power amplifiers, in frequency mixer and phase shifter.Most common power splitter is Wilkinson power divider.Most basic work(
It is a three-port network to divide device, can also be generalized to multiport power splitter.Plane power splitter is because with size is small, is easy to collect
Into the advantages of, it is more universal on the market.However, existing power splitter has working frequency to fix, it is impossible to dynamic regulation, it is impossible to filter
The shortcomings that wave, it is impossible to meet Nowadays communication system compact, the demand of multiband work.
Invention content：
The object of the present invention is to provide a kind of of low cost, small, light-weight, energy consumption is small, is easy to and other circuit collection
Into the adjustable microstrip power divider of working frequency that can be filtered.
The invention is realized in this way：
Substrate is by upper strata metal 1 from top to bottom, medium 2,3 forms to metal, substrate has runs through the first of substrate up and down
Plated-through hole 121, the second plated-through hole 131, third plated-through hole 141, the 4th plated-through hole 151, substrate upper table
Face is welded with the first varactor 161, the second varactor 162, third varactor 163, the 4th varactor
164th, the first biasing resistor 171, the second biasing resistor 172, third biasing resistor 173, the 4th biasing resistor 174, isolation resistance
21, upper strata metal 1 have incoming feeder 11, the first tunable resonator 12, the second tunable resonator 13, third tunable resonator 14,
4th tunable resonator 15, the first offset line 181, the second offset line 182, the first output feeder 19, the second output feeder 20.
Further, incoming feeder 11 is vertically connected with two sections of symmetrical U-shaped microstrip lines by 50 ohm of microstrip line and formed,
U-shaped microstrip line is distributed in the left and right sides of 50 ohm microstrips, and opening is opposite, the first tunable resonator 12, the second turnable resonator
Device 13, third tunable resonator 14, the 4th tunable resonator 15 are U-shaped, and one end open circuit, the other end passes through the first metal respectively
It is short-circuit to change through-hole 121, the second plated-through hole 131, third plated-through hole 141, the 4th plated-through hole 151, first,
2nd, it is separated in three, four tunable resonators, become respectively by the first varactor 161, the second varactor 162, third
Hold diode 163, two parts that the 4th varactor 164 will be switched off connect, the change of the first varactor 161, second
Hold diode 162, third varactor 163, the 4th varactor 164 cathode be welded to corresponding first and second,
3rd, that one end of the open-circuit line of four tunable resonators, anode are welded to the short circuit one of corresponding first, second, third and fourth tunable resonator
End, two sections of U-shaped microstrip lines of incoming feeder 11 pass through gap coupling with the first tunable resonator 12, third tunable resonator 14 respectively
It closes, the first tunable resonator 12 is opposite with the opening of the U-shaped of third tunable resonator 14, and the second tunable resonator 13 and the 4th can
The opening for adjusting the U-shaped of resonator four is opposite, and one end of 13 short circuit of the first tunable resonator 12 and the second tunable resonator passes through seam
Gap couples, and one end of 15 short circuit of third tunable resonator 14 and the 4th tunable resonator passes through slot-coupled, the first output feeder
19 be S-shaped, passes through slot-coupled with the 4th tunable resonator 15；Mirror of second output feeder 20 for the S-shaped of the first output feeder
Picture with the second tunable resonator 13 by slot-coupled, passes through between the first output feeder 19 and the second output feeder 20 and is isolated
Resistance 21 connects.
Further, the first offset line 181, the filament that the second offset line 182 is symmetrical T shapes, each end of filament
For the pad of square, one end of the first biasing resistor 171 is welded on open circuit one end microstrip line of the first tunable resonator 12,
The other end is connected on the upper pad of the first offset line 181, and one end of the second biasing resistor 172 is welded to the second tunable resonator
On 13 open circuit one end microstrip line, the other end is connected on the lower pad of the first offset line 181, and the one of third biasing resistor 173
End is welded on open circuit one end microstrip line of third tunable resonator 14, and the other end is connected to the upper pad of the second offset line 182
On, one end of the 4th biasing resistor 174 is welded on open circuit one end microstrip line of the 4th tunable resonator 15, and the other end is connected to
On the lower pad of second offset line 182.
The principle of technical scheme of the present invention is：Signal is entered by incoming feeder 11, is coupled to tunable resonator 12 and can
Resonator 14 is adjusted, then respectively by tunable resonator 13 and tunable resonator 15, output feeder 19 and output feeder 20 carry out defeated
Go out.DC offset voltage is by offset line, isolation resistance, is added to the cathode of varactor.The effect of isolation resistance is can only
DC voltage is allowed to be added on diode, while ensures that AC signal will not be leaked by isolation resistance on voltage source.It is added to change
It is different with regard to tunable resonator resonance can be made in different frequencies to hold the bias on diode, so as to dynamically change power splitter work
Centre frequency.Isolation resistance 21 is used for improving the isolation of power splitter output two-way.
Currently, radio-frequency devices just develop towards the direction of miniaturization, and the device of different function is integrated into a device
It is an approach for realizing this target.And power splitter and wave filter are placed in same radio-frequency devices as one by the present invention
New device can realize the function of energy distribution and frequency selection simultaneously, to realizing the miniaturization of device, improving integrated level and reduction
Production cost is highly beneficial.Connection wave filter is typically necessary before or after the feeding network of traditional array antenna
The selectivity of improvement system if using the present invention of filter function in an antenna array, can save additional wave filter, right
Have great importance in the integrated level for reducing system bulk, reducing cost and improving device.
In conclusion the advantages of the present invention are as follows：
（1）Working frequency can change with bias voltage, have real-time adjustability, adapt to different communication marks
It is accurate.
（2）The present invention is using varactor as tuned cell, and cheap, required bias voltage is small, tuning speed
Degree is fast, and loss is small.
（3）The present invention is of low cost using planar structure, small convenient for batch production, light-weight, be easy to and other
Circuit integrates.
Description of the drawings：
Fig. 1 is front view of the present invention.
Fig. 2 is the vertical view of Fig. 1.
Fig. 3 is the output port isolation degree test curve graph of the present invention.
Fig. 4 is the left side port transmission coefficient test curve figure of the present invention.
Fig. 5 is the right port transmission coefficient test curve figure of the present invention.
Fig. 6 is the input port return loss test curve figure of the present invention.
Specific embodiment：
The present invention will be further described in the following with reference to the drawings and specific embodiments：As depicted in figs. 1 and 2, a kind of work
The adjustable microstrip power divider of frequency, including upper strata metal 1 from top to bottom, medium 2, metal 3, run through the metal of substrate up and down
Change the transfiguration two welded above through-hole 121, plated-through hole 131, plated-through hole 141, plated-through hole 151 and substrate
Pole pipe 161, varactor 162, varactor 163, varactor 164, biasing resistor 171, biasing resistor 172, partially
Put resistance 173, biasing resistor 174, isolation resistance 21；Upper strata metal 1 includes incoming feeder 11, and tunable resonator 12 is tunable
Shake device 13, tunable resonator 14, tunable resonator 15, offset line 181, offset line 182, output feeder 19, output feeder 20.
Incoming feeder 11 is vertically connected by the microstrip line that 50 ohm of microstrip line takes the shape of the letter U with two sections and formed, U-shaped microstrip line point
For cloth in the left and right sides of 50 ohm microstrips, opening is opposite；Tunable resonator 12, tunable resonator 13, tunable resonator 14, can
It is U-shaped to adjust resonator 15, and one end is opened a way, and the other end is logical by plated-through hole 121, plated-through hole 131, metallization respectively
Hole 141, plated-through hole 151 are short-circuit；It is separated in above-mentioned tunable resonator, respectively by varactor 161, transfiguration two
Pole pipe 162, varactor 163, varactor 164 connect two parts；Varactor 161, varactor
162nd, varactor 163, varactor 164 cathode be welded to that one end of the open-circuit line of corresponding tunable resonator, sun
Pole is welded to short-circuit one end；Two sections of U-shaped microstrip lines of incoming feeder 11 pass through respectively with tunable resonator 12, tunable resonator 14
Slot-coupled；Tunable resonator 12 is opposite with the opening of the U-shaped of tunable resonator 14, tunable resonator 13 and tunable resonator 15
U-shaped opening it is opposite；Tunable resonator 12 and one end of 13 short circuit of tunable resonator pass through slot-coupled, tunable resonator 14
Pass through slot-coupled with one end of 15 short circuit of tunable resonator；Output feeder 19 is bent into S-shaped, passes through gap coupling with resonator 15
It closes；Output feeder 20 is bent into the mirror image of S-shaped, passes through slot-coupled with resonator 13；Output feeder 19 and output feeder 20 it
Between connected by isolation resistance 21.
Offset line 181, offset line 182 are the filament of T shapes, and each end of filament is square pad；Biasing resistor
171 one end is welded on open circuit one end microstrip line of tunable resonator 12, and the other end is connected on the pad of offset line 181；
One end of biasing resistor 172 is welded on open circuit one end microstrip line of tunable resonator 13, and the other end is connected to offset line 181
On pad；One end of biasing resistor 173 is welded on open circuit one end microstrip line of tunable resonator 14, and the other end is connected to biasing
On the pad of line 182；One end of biasing resistor 174 is welded on open circuit one end microstrip line of tunable resonator 15, and the other end connects
It is connected on the pad of offset line 182.
Substrate uses domestic F4B dielectric substrates, relative dielectric constant 2.65, substrate thickness 0.8mm.Test result is such as
Shown in Fig. 3, Fig. 4, Fig. 5 and Fig. 6, when bias voltage changes between 2.1V to 20V, the range of working frequency of the invention is
1.9GHz to 2.5GHz, three dB bandwidth change between 205MHz to 304MHz, insertion loss between 4.24dB to 5.05dB,
Return loss is more than 10dB, and isolation is all higher than 10dB in entire adjustable extent, and the size of entire circuit is long 43mm, wide
30mm, high 0.8mm.
Claims (1)
1. the adjustable microstrip power divider of working frequency, it is characterised in that substrate is by upper strata metal from top to bottom（1）, medium（2）,
Metal（3）It forms, substrate has up and down through the first plated-through hole (121) of substrate, the second plated-through hole (131), the
Three plated-through holes (141), the 4th plated-through hole (151), substrate upper surface are welded with the first varactor (161),
Two varactors (162), third varactor (163), the 4th varactor (164), the first biasing resistor (171),
Second biasing resistor (172), third biasing resistor (173), the 4th biasing resistor (174), isolation resistance（21）, upper strata metal
（1）There is incoming feeder（11）, the first tunable resonator（12）, the second tunable resonator（13）, third tunable resonator（14）,
Four tunable resonators（15）, the first offset line（181）, the second offset line（182）, the first output feeder（19）, second output feedback
Line（20）, incoming feeder（11）It is vertically connected and formed with two sections of symmetrical U-shaped microstrip lines by 50 ohm of microstrip lines, U-shaped micro-strip
Line is distributed in the left and right sides of 50 ohm microstrips, and opening is opposite, the first tunable resonator（12）, the second tunable resonator
(13), third tunable resonator (14), the 4th tunable resonator (15) are U-shaped, and one end open circuit, the other end passes through first respectively
Plated-through hole (121), the second plated-through hole（131）, third plated-through hole（141）, the 4th plated-through hole（151）It is short
Road, it is separated in first, second, third and fourth tunable resonator, respectively by the first varactor（161）, the second varactor
（162）, third varactor（163）, the 4th varactor（164）The two parts that will be switched off connect, the first transfiguration
Diode（161）, the second varactor（162）, third varactor（163）, the 4th varactor（164）Cathode
It is welded to that one end of the open-circuit line of corresponding first, second, third and fourth tunable resonator, anode is welded to corresponding first,
2nd, short-circuit one end of three, four tunable resonators, incoming feeder（11）Two sections of U-shaped microstrip lines respectively with the first tunable resonator
（12）, third tunable resonator（14）Pass through slot-coupled, the first tunable resonator（12）With third tunable resonator（14）U
The opening of shape is opposite, the second tunable resonator（13）It is opposite with the opening of the U-shaped of the 4th tunable resonator four, the first turnable resonator
Device（12）With the second tunable resonator（13）One end of short circuit passes through slot-coupled, third tunable resonator（14）It is adjustable with the 4th
Resonator（15）One end of short circuit passes through slot-coupled, the first output feeder（19）For S-shaped, with the 4th tunable resonator（15）It is logical
Cross slot-coupled；Second output feeder（20）The mirror image of S-shaped for the first output feeder, with the second tunable resonator（13）Pass through
Slot-coupled, the first output feeder（19）With the second output feeder（20）Between pass through isolation resistance（21）Connection, the first biasing
Line（181）, the second offset line（182）For the filament of symmetrical T shapes, each end of filament is square pad, and first partially
Put resistance（171）One end be welded to the first tunable resonator（12）Open circuit one end microstrip line on, the other end is connected to first
Offset line（181）Upper pad on, the second biasing resistor（172）One end be welded to the second tunable resonator（13）Open circuit one
It holds on microstrip line, the other end is connected to the first offset line（181）Lower pad on, third biasing resistor（173）One end welding
To third tunable resonator（14）Open circuit one end microstrip line on, the other end is connected to the second offset line（182）Upper pad on,
4th biasing resistor（174）One end be welded to the 4th tunable resonator（15）Open circuit one end microstrip line on, the other end connection
To the second offset line（182）Lower pad on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510718123.3A CN105375093B (en) | 2015-10-30 | 2015-10-30 | The adjustable microstrip power divider of working frequency |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510718123.3A CN105375093B (en) | 2015-10-30 | 2015-10-30 | The adjustable microstrip power divider of working frequency |
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| Publication Number | Publication Date |
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| CN105375093A CN105375093A (en) | 2016-03-02 |
| CN105375093B true CN105375093B (en) | 2018-07-06 |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105826641A (en) * | 2016-03-24 | 2016-08-03 | 成都九洲迪飞科技有限责任公司 | High selectivity band-pass adjustable filter |
| US10320043B2 (en) | 2017-05-23 | 2019-06-11 | Nanning Fugui Precision Industrial Co., Ltd. | Power distributing device |
| US10944377B2 (en) * | 2017-12-31 | 2021-03-09 | Skyworks Solutions, Inc. | Broadband power splitter |
| CN108682926B (en) * | 2018-06-14 | 2020-01-03 | 南京师范大学 | High-selectivity dual-passband power division filter |
| CN109037930B (en) * | 2018-07-13 | 2020-09-11 | 东南大学 | Broadband array antenna based on laminated microstrip and substrate integrated waveguide feed |
| CN111628257B (en) * | 2020-06-01 | 2021-09-24 | 中天宽带技术有限公司 | Filtering power divider |
| CN112002979B (en) * | 2020-10-10 | 2021-11-09 | 电子科技大学 | Filtering power divider and communication system |
| CN112886172B (en) * | 2021-01-13 | 2022-01-04 | 电子科技大学 | Multi-path power divider with reconfigurable power dividing path number |
| CN114389002B (en) * | 2022-01-24 | 2023-06-09 | 西华大学 | SIW filtering power divider loaded with complementary stepped folding open ring and design method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5847625A (en) * | 1997-04-02 | 1998-12-08 | Tx Rx Systems Inc. | Power Divider directional coupler |
| CN104362422A (en) * | 2014-11-24 | 2015-02-18 | 电子科技大学 | Novel continuously-adjustable microwave band-pass power divider based on nematic liquid crystals |
| CN104466335A (en) * | 2014-11-29 | 2015-03-25 | 华南理工大学 | Electric adjusting power divider with filter function |
-
2015
- 2015-10-30 CN CN201510718123.3A patent/CN105375093B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5847625A (en) * | 1997-04-02 | 1998-12-08 | Tx Rx Systems Inc. | Power Divider directional coupler |
| CN104362422A (en) * | 2014-11-24 | 2015-02-18 | 电子科技大学 | Novel continuously-adjustable microwave band-pass power divider based on nematic liquid crystals |
| CN104466335A (en) * | 2014-11-29 | 2015-03-25 | 华南理工大学 | Electric adjusting power divider with filter function |
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